Will Tide Turn for Carnival?

The cruise operator's investors again got that sinking feeling, this time on news that a damaged ship broke away from its dock.

On Wednesday, a little more than a month after an engine fire crippled Carnival's (ticker: CCL) Triumph cruise ship in the Gulf of Mexico, it broke free of its moorings in Alabama and floated downriver. (See Stocks to Watch Today.) The ship, which is being repaired from the February incident, was...